1. Lesson 2

2. How Do Living Things Get Energy?
Photosynthesis is the process by which plants (including algae) use sunlight to make sugar from carbon dioxide and water.
Producers (which include some single-celled organisms) carry out this process
Photosynthesis releases oxygen that other animals (fish, snails, etc.) use to breathe.
Respiration – the process of taking in oxygen and releasing carbon dioxide to get energy
Sunlight + water + CO2 sugar + oxygen

3. Photosynthesis
Photosynthesis/Respiration Cycle

4. How Do Living Things Get Energy?
Consumers - organisms that feed on other organisms for energy.
Carnivore – eats other consumers (meat)
Herbivore – eats only plants
Omnivore – eats both plants and animals
Scavengers – special consumer that feeds on the bodies of dead organisms.
Decomposers – special consumer that helps to break down and decay dead organisms and the wastes of living organisms.

5. How Do Living Things Get Energy?
Dependent – When one thing relies on another for support.
Interdependent – When two or more things rely on each other for support.